Rotary engine.



A. E. RASMUSSEN.

ROTARY ENGINE.

. APPLICATION FILED JULY 15. 1999. 957,799. I Patented May10,1911

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, ROTARY ENGINE.

APPLICATION FILED JULY 16, 1909.

957,799. Patented May 10, 19M

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UNITED STATES ALBERT E. RASMUSSEN'. OF NORTH YAKIMA, WASHINGTON.

no rrmY ENGINE.

Specification of Letters Patent.

Patented May 10, .1910.

Application filed July 15, 1909. Serial No. 507.833.

To all 1137mm "it may concern:

Be it known that I, Aunsnr F.. llasuns- E sex, a citizen of the UnitedStates. residing at North Yakima. in the county of Yakima and State of\Vashington. have invented new and. useful Improvements in RotaryEngines. of which the following is a specification.

This invention relates to rotary engines and one of the principalobjects of the is to provide an engine of simple cons ruction. ofcompact form and one which can be readily reversed to rotate in eitherdirection.

-.-\nother object of the invention is to provide a rotary engine whichwill work smoothly under varying conditions and which may be. used as asteam engine. a gas engine or a compressed air motor, the operativeelements being of simple construction and composed of few parts.

Still another object of the invention is to provide a rotary engine inwhich the pistons which rotate in the cylinder carry with them thesectors against which the motive element impinges to rotate the pistons.

These and other objects may be attained by the construction illustratedin the accompanying drawing, in which Figure 1 is a central verticalsection of a rotary engine made in accordance with my invention. Fig. 2is a similar view with the operative parts in different. position. Fig.3 is a similar view illustrating a slightly modified form. Fig. 4; isalso a section of similar character showing a still further modifiedform of my invention. Fig. is a vertical section taken longitudinally ofthe engine shown in Figs. 1 and 2. Fig. 6 is a similar View of theengine shown in Fig. 3.

Referring to Figs. 1, 2 and 5 of the drawing the numeral 1 designatesthe cylinder provided with a suitable base 2 and provided with removableheads 3 secured in place by bolts 4. One of the heads 5 is provided withan outwardly extending centrally disposed boss 5 having a bore extendinginto the cylinder. J ournaled in the bore of the boss is a sleeve 6connected by integral arms 7 to a 'Q1t piston 8 having at its outer edgea suitle packing 9 which may be in the form of a yielding strip or aspring projected packing to insure contact of the outer edge of thepiston with the interior wall of the cylinder. Another piston 8" isconnected by means of arms 7 to a solid shaft 6 extending through thesleeve 6. In this manner the two pistons are permitted to moveindependently. Projet-ting from the opposite head 3 of the cylinder 1s aboss 10 which is di posed eccentrically to the shaft (3. Mounted in theboss 10 is a shaft 11 carrying at its outer end a belt policy 12. ()uthe inner end of the shaft 11 a wheel is fixed said wheel eoin n'ising ahub 13 having a series of radially projecting spokes -1-t. said spokescarrying eolnentrically arranged sectors 15. the outer surfaces of whichare designed to bear against. the. inner wall of the cylinder duringtheir rotation. These sectors are carried around with the pistons bymeans of links 16 pivotally connected to the sectors and to the pistons.Gates 1? are connected to arms 18 mounted upon the shaft ll and the arms18 are connected by springs 19 to the spokes 14 of the wheel. An inletport 20 connnunicates with the cylinder at one side of the centerthereof and upon the opposite side is an exhaust port 21. It will beobvious that when the engine is reversed the port 21 will serve as aninlet portand the port 20 as an exhaust port. A suitable packing 22 issecured to the inner wall of the cylinder at. a p nt. between the twoports. v

Referring now to Figs. 3 and 6 it will be seen that all the parts are ofsubstantially the. same construction as those already describedexcepting that the shaft 11 is journalcd eccentrically in bosses 23formed upon the inner walls of the heads 3. The wheel carrying thesectors 15 is provided with series of spokes 14 and links 16 connect thesectors with the pistons 8 and 8. These pis ons are each connected to aneccentric strap 24: mounted upon the bosses 23 as shown moreparticularly in Fig. 6. The shaft- 11 carries a belt pulley 12.

Referring to Fig. 4 it will be seen that the gates 17 are omitted andthat the sectors 15 are each independently mounted upon the shaft 11".These sectors 15 are also connected to the pistons 8 by means of links16 and a. In lieu of the links 16 or a I may use a telescopic linkcomprising a tubular member 0 pivoted to the sector 15", while the solidtelescopic member (Z is pivoted to the piston 8.

The operation of my invention may be briefly described as follows: Themotive cle ment being admitted through the inlet port 21 forces thepistons and the sectors around the cylinder. Referring to Fig. 2 it willbe seen that the motive element bears directly upon the piston 8 andimpinges upon the surface of the sectors 15 while the gates 8 t preventthe steam or motive element from i passing back of the sector 15 whilethe? springs 15) :aerve to force the gates against; the pistons duringevery partof their op- 5 eration. Itv will be obvious that. the engine Ecan be readily reversed by permitting the motive elements to enterthrough the port 21, the port- 30 then serving as an exhaust port.

1. A rotary engine comprising a casing, independently mounted pistons inthe casing, sectors mounted eccentric-ally to the pistons, linksconnecting the sectors and the pistons, and spring-acuiated gates forclosing the openings between the sectors and; pistons.

2. A rotary engine comprising a cylinder, pistons independently mounted111 the cylinder, a wheel mounted on a shaft disposed ect centric-allyto the center of rotation of said pistons, sectors carried by thewheels, links connecting said sectors and said pistons, said links beingpivotaily mounted at their ends, and gates connected by springs to saidwheel for closing the space between the sectors and the pistons. l

3. A rotary engine comprising a cylinder, pistons mounted concentricallyin the cylinder, a wheel mounted eccentrically in the cylinder sectorscarried by said wheel, said wheel and pistons being connected by pivotedlinks, inlet and exhaust ports in the casing, and gates actuated bysprings for closing the openings between the sectors and the pistons.

l. A rotary engine comprising a casing, pistons mounted in the casing,one of said pistons being connected to a hollow shaft,

the other piston being connected to a solid shaft mounted in the hollowshaft, a wheel journaled on a shaft mounted eccentrically in the casing,sectors carried by the wheel, links connecting the sectors with thepiston, said links being pivoted, and gates carried by arms mounted onthe wheelshaft and actuated by springs to close the openings be tweenthe pistons and the sectors.

In testimony whereof I attix my signature in presence of two witnesses.

ALBERT E. RASMUSSEN.

Witnesses G120. F. MCAULAY, FRED A. CLEVELAND.

